|Year|Competition|Venue|Position|Event|Notes|
|---|---|---|---|---|---|
|1999|Universiade|Palma de Mallorca, Spain|2nd|20 km|1:25:23|
|2001|European Race Walking Cup|Dudince, Slovakia|12th|20 km|1:22:10|
|2001|World Championships|Edmonton, Canada|16th|20 km|1:25:28|
|2001|Universiade|Beijing, China|1st|20 km|1:24:42|
|2002|European Championships|Munich, Germany|9th|20 km|1:21:21|
|2002|World Race Walking Cup|Turin, Italy|12th|20 km||
|2003|World Championships|Paris, France|11th|20 km|1:20:34 PB|
|2005|World Championships|Helsinki, Finland|14th|20 km||

Question: how many placed did lorenzo improve between his edmonton and beijing competition?
Answer: 15